Originally Posted by
surak
Is the main advantage they have over alloy that they dampen more road chatter, are lighter, can be shaped more aerodynamically for the same weight, look bling...?
Yes.
I just prefer the overall feel, in general. It's hard to describe, but in addition to the above, there's the fact that they're less of a heat sink, too.
I had carbon bars on my Domane with front IsoSpeed; still preferred them to the stock alloy bars.